Means for securing wind-shields to caps of armor-piercing projectiles.



J. P. TAYL MEANS FOR SEGURING WIND SHIELDS T0 CA ARMOR PIERGING PROJEGTILBS.

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1 130 44 Patented M312, 1915.

- 4w Xmm JOSEPH IPANNEL TAYLOR, OF PHILADELPHIA, PENNSYLVANIA.

MEANS FOR SECURING WIND-SHIELDS TO CAPS 0F ARMOR-PIERCING PROJECTILES.

Application fi1ed=Febrnary 25, 1913.

To all whom it may concern:

Be it known that I, JOSEPH PANNEL TAY- LOR, a citizen of the United States, residing at Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented a new and useful Improvement in Means for Securing Wind-Shields to Caps of Armor- Piercing Projectiles, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which form a part of this specification.

In armor piercing projectiles it is usual to apply to the hardened point of the projectile a cap and a wind-shield both of relatively soft material, the cap being secured to the projectile point and the wind shield secured to the cap. The contour of the outer walls of the cap and shield substantially coincide with each other and with the other wall of the projectile. The Well known object of this construction is to provide a projectile with a longer, and more gradually tapering, point, thereby reducing the air resistance, and insuring the main tenance of a flatter trajectory in its flight through the air, but without affecting the penetrating power of the projectile, as would be the case if the body of the projectile itself were elongated or narrowed to the shape of the cap and wind shield; the soft metal cap, in fact, substantially contributing to the penetrating power of the projectile.

Considerable difficulty has been encountered in fastening the wind-shield to the cap with the required security, and also in so securing the wind-shield that when the projectile strikes the plate, the windshield will be crushed and spread outwardly in a uniform manner, the tendency being for the bulk of the metal to be forced outwardly toward one side, thus tending to cause a change in direction of the projectile and reducing its penetrating power.

The object of my invention is to provide means for securing the wind-shield to the cap that will entirely overcome the disadvantages mentioned.

In the drawings: Figure 1 is a longitudinal sectional view of a cap and windshield illustrating the complementary securing means on the two parts as they appear before the parts are secured together. Fig. 2 is a similar View showing a modifica- Specification of Letters Patent.

Patented Mar. 2, 1915.

Serial No. 750,469.

tion and the cap and wind shield secured together.

The projectile body itself is not shown, the cap being secured thereto by any means known in the art. The outer wall of the cap a, as usual, curves toward the longitudinal axis of the projectile on a long radius. The outer wall of the wind-shield 1) continues the curve of the cap, but preferably the degree of curvature is not continued to the longitudinal axis of the projectile, the point of the projectile being truncated as shown. The precise external contour of the cap and wind shield is not, however, novel with me, nor of materiality in the embodiment of my invention.

The upper wall of the cap a which, like the point of the wind-shield, is preferably truncated, is provided with an annular groove. This groove is located relatively close to the outer wall of the cap, and should be of considerable depth relatively to its width. It extends, in the direction of its depth, at an oblique angle to the axis of the projectile body, either outwardly or away from the axis, as shown at c, Fig. 1, or inwardlv toward the axis, as shown at d, Fig. 2. The outer wall of the groove is at its upper end curved outwardlv toward the wall of the cap.

The outer wall of the wind-shield Z) is cut away at its rear end to a depth sufficient to form an annular flange 6, whose thickness corresponds substantially to the width of the groove 0 or d. The internal diameter of the flange is substantially equal to the distance across the top of the cap between opposite points at the inner upper edge of the groove 0 or cl, so that when the windshield is brought into contact with the cap, the flange will register with the mouth of the groove. \Vhen in this position, the flange is forced into the groove by pressure in the direction of the axis of the projectile, the result being that the flange will be deflected either outwardly or inwardly, dependently upon the direction of extension of the groove. The result is that the windshield is practically irremovably riveted to the cap.

The forward, outer wall of the flange e is curved outward toward the outer wall of the wind-shield on a curve corresponding to that connecting the outer wall of the groove 0 or (Z with the outer wall of the cap.

Then, therefore, the cap and wind-shield are secured together, a perfectly tight joint is formed between them.

With the wind-shield so secured to the cap there can be no displacement of the Wind-shield relatively to the cap either firing or during flight, and when the projectile strikes its target, the outward displacement of the wind-shield will be uniform, the effect upon impact being the same as if the wind-shield and cap were integral one with the other. i Having now fully described my invention, what I claim and desire to protect by LettersPatent is 1. In an armor piercing projectile, a cap and a wind shield and interlocking members thereon one of which, by pressure of the cap and wind shield toward each other in the direction of the axis of the projectile, is deformed and thereby held in interlocking relation with the other member.

2. In an armor piercing projectile, a cap and a windshield and interlocking members thereon, one of which is deformable, adapted for interlocking engagement by pressure of the cap and wind-shield toward each other in the direction of the axis of the projectile, said members extending approximately longitudinally of the projectile but at an angle to each other.

3. In an armor piercing projectile, a cap and a Wind shield, a deformable flange and a complementary groove, one of which is located at the front wall of the cap and the other of which is located at the opposing end of the wind shield, and adapted, solely by pressure of the cap and Wind shield to ward each other in the direction of the axis of the projectile, to rivet the shield and cap together. I

e. In an armor piercing projectile, a cap and a wind shield, a deformable flange and V a complementary groove, one of which is located at the front wall of the cap and the other of which is located at the opposing end of the wind shield, said flange in the direction of its heightand said groove in the direction of its depth extending approximately longitudinally of the projectile but at an angle to each other.

5. In an armor piercing projectile, a cap, a Wind-shield and complementary riveting members, respectively at the front wall of the cap and the opposing rear end of the wind-shield and both offset inwardly with respect to the outer face of'the projectile and adapted to mutually engage and permanently interlock solely by pressure of the cap and wind-shield toward each other in the direction of the axis of the projectile.

6. In an armor piercing projectile, a cap and a wind-shield, a flange and a complementary groove, one of which is located at the front wall of the cap and the other of which is located at the opposing end of the wind-shield, said flange in the direction of its height and said groove in the direction of its depth extending approximately longitudinally of the projectile and both offset inwardly with respect to the other face of the, projectile and adapted to mutually engage and interlock when the cap and shield are forced toward each other in a longitudinal direction.

7. In an armor piercing projectile, a cap,- a wind-shield, a deformable flange and a complementary groove, one of which is located at the front of the cap and the'other of'which is located at the opposing end of the windshield, said. flange in the direction of its height and said groove in the direction of itsdepth extending approximately longitudinally of the projectile but at an angle to each other and adapted'to mutually interlock and rivet-together the cap and shield when the same are forced together in a longitudinal direction.

8. In an armor piercing rojectile, a cap a wind-shield, a deformable flange and a complementary groove, one of which is located at the front of the cap and the other of which is located at the opposing end of the wind shield, said flange extending in the direction of its height substantially parallel to the axis of the projectile and said groove in the direction of its depth extending at an angle to the axis of the projectile, said projection and groove adapted to mutually interlock and rivet together the cap and shield when the same are forced together in a longitudinal direction. 7

9. In an armor piercing projectile, a cap and a wind-shield, a deflectable flange on one member offset inwardly from its outer surface and extending longitudinally of the projectile, and an opposing groove in the other member also offset inwardly from its outer surface and which in the direction of its depth extends at an angle to the axis of the projectile and which is adapted when the members are forced together in a longitudinal direction, to receive, deflect and securely hold the said flange.

10. In an armor piercing projectile, a cap and a wind-shield, a deflectable annular flange extending rearwardly of the windshield parallel with the axis ofthe projectile and offset inwardly from the outer surface of the wind shield, and an opposing annular groove in the cap which in the direction of its depth extends at an angle to the axis of the projectile and is also offset groove offset inwardly from its outer surface and extending in the direction of its depth at an oblique angle to the axis of the projectile and opening in the direction of the length of the projectile, while the other member has an opposing flange also offset inwardly from its outer surface and forcibly entered into the groove and securely held therein solely by the pressure produced by its forcible engagement.

12. In an armor piercing projectile, a cap having an annular groove in its front face concentric with its outer wall and extending in the direction of its depth at an ablique angle to the projectile axis, and a wind-shield having a rearwardly-extending annular flange offset from, and concentric with, the outer wall of the Wind-shield and forcibly entered within said groove.

13. In an armor iercin projectile, a. cap and a wind-shield? a de ectable annular flange extending rearwardly from the wind shield and parallel to the axis of the projectile and offset in an inward direction from the outer wall of the wind-shield, the root of the flange being curved concavely outward toward said outer wall, and an opposing annular groove in the front of the cap which in the direction of its depth extends at an oblique angle to the axis of the projectile, the outer wall of said groove being curved convexly outward corresponding with the concave surface at the root of the flange, said groove being adapted when the members are forced together to receive, deflect, and securely hold the flange, whereby the cap and wind shield are securely attached With a perfect joint between them.

In testimony of which invention, I have hereunto set my hand, at Philadelphia, on this 21st day of February, 1913.

JOSEPH PANNEL TAYLOR.

Witnesses: J AMES B. KING,

JOSEPH ENTWISLE.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents,

Washington, D. 0. 

